1. Intermolecular Enantioselective Amination Reactions Mediated by Visible Light and a Chiral Iron Porphyrin Complex.
- Author
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Ahmed, Hussayn, Ghosh, Biki, Breitenlechner, Stefan, Feßner, Malte, Merten, Christian, and Bach, Thorsten
- Subjects
IRON porphyrins ,HYDROGEN bonding interactions ,BIOCHEMICAL substrates ,VISIBLE spectra ,HYDROGEN atom - Abstract
In the presence of 1 mol % of a chiral iron porphyrin catalyst, various 3‐arylmethyl‐substituted 2‐quinolones and 2‐pyridones underwent an enantioselective amination reaction (20 examples; 93–99 % ee). The substrates were used as the limiting reagents, and fluorinated aryl azides (1.5 equivalents) served as nitrene precursors. The reaction is triggered by visible light which allows a facile dediazotation at ambient temperature. The selectivity of the reaction is governed by a two‐point hydrogen bond interaction between the ligand of the iron catalyst and the substrate. Hydrogen bonding directs the amination to a specific hydrogen atom within the substrate that is displaced by the nitrogen substituent either in a concerted fashion or by a rebound mechanism. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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